Current status of ϵk in lattice QCD

Abstract

We present the current status of ϵK evaluated directly from the standard model using lattice QCD inputs. The lattice QCD inputs include and Recently, FLAG has updated , exclusive has been updated with new lattice data in the decay mode, and RBC-UKQCD has updated ξ0 and ξ1. We find that the standard model evaluation of ϵK with exclusive (lattice QCD inputs) is 3.2σ lower than the experimental value, while that with inclusive (heavy quark expansion) shows no tension. © Published under licence by IOP Publishing Ltd.